For more information on the subject of repair of hulls/decks, check the excellent "On the Wire (tm)" articles.

Ref: http://www.thebeachcats.com/OnTheWire/www.west.net/_lpm/hobie/archives/v1-i5/techtips.html

See if you can identify which areas are 'creaking', and do a repair if feasible.

It's worthwhile to read the rest of the "On the Wire (tm)" archives also. Lots of great stories and tips, some of the humor sections are just hysterical..

http://www.thebeachcats.com/OnTheWire/catsail.com/archives.html